关于S3C2410裸机驱动LCD的问题

amote 2009-9-24 11:09 楼主

/**************************************************************
320×240 16Bpp TFT LCD功能模块初始化
**************************************************************/
void Lcd_Init(void)
{
rLCDCON1=(CLKVAL_TFT_240320<<8)|(MVAL_USED<<7)|(3<<5)|(12<<1)|0;
// TFT LCD panel,12bpp TFT,ENVID=off
rLCDCON2=(VBPD_240320<<24)|(LINEVAL_TFT_240320<<14)|(VFPD_240320<<6)|(VSPW_240320);
rLCDCON3=(HBPD_240320<<19)|(HOZVAL_TFT_240320<<8)|(HFPD_240320);
rLCDCON4=(MVAL<<8)|(HSPW_240320);
rLCDCON5=(1<<11)|(0<<9)|(0<<8)|(0<<6)|(BSWP<<1)|(HWSWP);
rLCDSADDR1=(((U32)LCD_BUFER>>22)<<21)|M5D((U32)LCD_BUFER>>1);
rLCDSADDR2=M5D( ((U32)LCD_BUFER+(SCR_XSIZE_TFT_240320*LCD_YSIZE_TFT_240320*2))>>1 );
rLCDSADDR3=(((SCR_XSIZE_TFT_240320-LCD_XSIZE_TFT_240320)/1)<<11)|(LCD_XSIZE_TFT_240320/1);
rLCDINTMSK|=(3); // MASK LCD Sub Interrupt
rLPCSEL&=(~7); // Disable LPC3600
rTPAL=0; // Disable Temp Palette

}
这段代码是我的初始化代码。其中的LCD_BUFER是声明的二维数组，通过rLCDSADDR这几个寄存器，设置了显存的地址。这样我写入LCD_BUFER数组中的数据，就可以来控制液晶的现实内容。
但是现在我调用Glib_FilledRectangle(100,100,200,200,0x07ff);这个函数，屏幕上也确实是显示了一个正方形。但是
它显示的位置，并不是我设置的100 100 200 200。而是在屏幕偏右的方向。也就是说这个地址发生了偏移。请问这是为什么？第一次发问，请大侠们帮着解决一下。我直接用的LCD_BUFER初始化的rLCDSADDR寄存器。也没有用到什么MMU。

回复评论（11）

沙发冬冬瓜

建议你贴出Glib_FilledRectangle（）函数的代码。你的这个坐标是不是固定坐标，而是相对坐标，相对坐标是要在buffer的起始地址的基础上加上绝对坐标才行

点赞 2009-9-27 14:27

板凳 iorihu

跟扫描方式有关系1？

点赞 2009-9-27 14:47

4楼爱车的人

首先把你的屏幕填满，看看有没有偏移来确定是不是初始化的问题；初始化没问题的话就是你画线函数的问题了

**************************
飞凌嵌入式 www.witech.com.cn
**************************

点赞 2009-9-27 16:39

5楼 whplcyz

#include
#include "2410addr.h"
#include "2410lib.h"
#include "def.h"
#include "2410slib.h"
#include "LCD.h"
volatile unsigned short LCD_BUFER[SCR_YSIZE_TFT_240320][SCR_XSIZE_TFT_240320];

void Lcd_Port_Init(void)
{
rGPCUP=0xffffffff; // Disable Pull-up register
rGPCCON=0xaaaa56a9; //Initialize VD[7:0],LCDVF[2:0],VM,VFRAME,VLINE,VCLK,LEND

rGPDUP=0xffffffff; // Disable Pull-up register
rGPDCON=0xaaaaaaaa; //Initialize VD[15:8]
}

void Lcd_Init(void)
{
rLCDCON1=(CLKVAL_TFT_240320<<8)|(MVAL_USED<<7)|(3<<5)|(12<<1)|0;
// TFT LCD panel,12bpp TFT,ENVID=off
rLCDCON2=(VBPD_240320<<24)|(LINEVAL_TFT_240320<<14)|(VFPD_240320<<6)|(VSPW_240320);
rLCDCON3=(HBPD_240320<<19)|(HOZVAL_TFT_240320<<8)|(HFPD_240320);
rLCDCON4=(MVAL<<8)|(HSPW_240320);
rLCDCON5=(1<<11)|(0<<9)|(0<<8)|(0<<6)|(BSWP<<1)|(HWSWP); //FRM5:6:5,HSYNC and VSYNC are inverted
rLCDSADDR1=(((U32)LCD_BUFER>>22)<<21)|M5D((U32)LCD_BUFER>>1);
rLCDSADDR2=M5D( ((U32)LCD_BUFER+(SCR_XSIZE_TFT_240320*LCD_YSIZE_TFT_240320*2))>>1 );
rLCDSADDR3=(((SCR_XSIZE_TFT_240320-LCD_XSIZE_TFT_240320)/1)<<11)|(LCD_XSIZE_TFT_240320/1);
rLCDINTMSK|=(3); // MASK LCD Sub Interrupt
rLPCSEL&=(~7); // Disable LPC3600
rTPAL=0; // Disable Temp Palette
}

void Lcd_EnvidOnOff(int onoff)
{
if(onoff==1)
rLCDCON1|=1; // ENVID=ON
else
rLCDCON1 =rLCDCON1 & 0x3fffe; // ENVID Off
}

void Lcd_Lpc3600Enable(void)
{
rLPCSEL&=~(7);
rLPCSEL|=(7); // 240320,Enable LPC3600
}

void Lcd_PowerEnable(int invpwren,int pwren)
{
//GPG4 is setted as LCD_PWREN
rGPGUP = rGPGUP|(1<<4); // Pull-up disable
rGPGCON = rGPGCON|(3<<8); //GPG4=LCD_PWREN
//Enable LCD POWER ENABLE Function
rLCDCON5 = rLCDCON5&(~(1<<3))|(pwren<<3); // PWREN
rLCDCON5=rLCDCON5&(~(1<<5))|(invpwren<<5); // INVPWREN
}

/**************************************************************
320×240 8Bpp TFT LCD 颜色初始化
**************************************************************/
void Lcd_Palette_Init(void)
{
unsigned char cdata, p_red, p_green, p_blue;
U32 *palette;

//#define PALETTE    0x4d000400 //Palette start address
palette=(U32 *)PALETTE;
*palette++=0; //black
for(cdata=1;cdata<255;cdata++)
{
p_red=(cdata & 0xe0);
p_green=(cdata & 0x1c);
p_blue=(cdata & 0x03);
*palette++=((U32)((p_red<<8)|(p_green<<6)|(p_blue<<3)));
}
*palette=0xffff; //white
}

/**************************************************************
320×240 16Bpp TFT LCD移动观察窗口
**************************************************************/
void Lcd_MoveViewPort(int vx,int vy)
{
U32 addr;

SET_IF();
#if (LCD_XSIZE_TFT_240320<32)
      while((rLCDCON1>>18)<=1); // if x<32
#else
      while((rLCDCON1>>18)==0); // if x>32
#endif

addr=(U32)LCD_BUFER+(vx*2)+vy*(SCR_XSIZE_TFT_240320*2);
rLCDSADDR1= ( (addr>>22)<<21 ) | M5D(addr>>1);
rLCDSADDR2= M5D(((addr+(SCR_XSIZE_TFT_240320*LCD_YSIZE_TFT_240320*2))>>1));
CLR_IF();
}

/**************************************************************
320×240 16Bpp TFT LCD移动观察窗口
**************************************************************/
void MoveViewPort(void)
{
int vx=0,vy=0,vd=1;

Uart_Printf("\n*Move the LCD view windos:\n");
Uart_Printf(" press 8 is up\n");
Uart_Printf(" press 2 is down\n");
Uart_Printf(" press 4 is left\n");
Uart_Printf(" press 6 is right\n");
Uart_Printf(" press Enter to exit!\n");

while(1)
{
switch(Uart_Getch())
{
case '8':
      if(vy>=vd)vy-=vd;
      break;

case '4':
      if(vx>=vd)vx-=vd;
break;

case '6':
            if(vx<=(SCR_XSIZE_TFT_240320-LCD_XSIZE_TFT_240320-vd))vx+=vd;
         break;

case '2':
            if(vy<=(SCR_YSIZE_TFT_240320-LCD_YSIZE_TFT_240320-vd))vy+=vd;
         break;

case '\r':
         return;

default:
      break;
}
Uart_Printf("vx=%3d,vy=%3d\n",vx,vy);
Lcd_MoveViewPort(vx,vy);
}
}

/**************************************************************
320×240 16Bpp TFT LCD单个象素的显示数据输出
**************************************************************/
void PutPixel(U32 x,U32 y,U32 c)
{
if ( (x < SCR_XSIZE_TFT_240320) && (y < SCR_YSIZE_TFT_240320) )
LCD_BUFER[(y)][(x)] = c;
}

/**************************************************************
320×240 16Bpp TFT LCD全屏填充特定颜色单元或清屏
**************************************************************/
void Lcd_ClearScr(U16 c)
{
unsigned int x,y ;

for( y = 0 ; y < SCR_YSIZE_TFT_240320 ; y++ )
{
for( x = 0 ; x < SCR_XSIZE_TFT_240320 ; x++ )
{
LCD_BUFER[y][x] = c;
}
}
}

/**************************************************************
LCD屏幕显示垂直翻转
// LCD display is flipped vertically
// But, think the algorithm by mathematics point.
// 3I2
// 4 I 1
//  --+-- <-8 octants  mathematical cordinate
// 5 I 8
// 6I7
**************************************************************/
void Glib_Line(int x1,int y1,int x2,int y2,int color)
{
int dx,dy,e;
dx=x2-x1;
dy=y2-y1;

if(dx>=0)
{
if(dy >= 0) // dy>=0
{
if(dx>=dy) // 1/8 octant
{
e=dy-dx/2;
while(x1<=x2)
{
PutPixel(x1,y1,color);
if(e>0){y1+=1;e-=dx;}
x1+=1;
e+=dy;
}
}
else // 2/8 octant
{
e=dx-dy/2;
while(y1<=y2)
{
PutPixel(x1,y1,color);
if(e>0){x1+=1;e-=dy;}
y1+=1;
e+=dx;
}
}
}
else    // dy<0
{
dy=-dy; // dy=abs(dy)

if(dx>=dy) // 8/8 octant
{
e=dy-dx/2;
while(x1<=x2)
{
PutPixel(x1,y1,color);
if(e>0){y1-=1;e-=dx;}
x1+=1;
e+=dy;
}
}
else // 7/8 octant
{
e=dx-dy/2;
while(y1>=y2)
{
PutPixel(x1,y1,color);
if(e>0){x1+=1;e-=dy;}
y1-=1;
e+=dx;
}
}
}
}
else //dx<0
{
dx=-dx; //dx=abs(dx)
if(dy >= 0) // dy>=0
{
if(dx>=dy) // 4/8 octant
{
e=dy-dx/2;
while(x1>=x2)
{
PutPixel(x1,y1,color);
if(e>0){y1+=1;e-=dx;}
x1-=1;
e+=dy;
}
}
else // 3/8 octant
{
e=dx-dy/2;
while(y1<=y2)
{
PutPixel(x1,y1,color);
if(e>0){x1-=1;e-=dy;}
y1+=1;
e+=dx;
}
}
}
else    // dy<0
{
dy=-dy; // dy=abs(dy)

if(dx>=dy) // 5/8 octant
{
e=dy-dx/2;
while(x1>=x2)
{
PutPixel(x1,y1,color);
if(e>0){y1-=1;e-=dx;}
x1-=1;
e+=dy;
}
}
else // 6/8 octant
{
e=dx-dy/2;
while(y1>=y2)
{
PutPixel(x1,y1,color);
if(e>0){x1-=1;e-=dy;}
y1-=1;
e+=dx;
}
}
}
}
}

/**************************************************************
在LCD屏幕上用颜色填充一个矩形
**************************************************************/
void Glib_FilledRectangle(int x1,int y1,int x2,int y2,int color)
{
int i;

for(i=y1;i<=y2;i++)
Glib_Line(x1,i,x2,i,color);
}

/**************************************************************
**************************************************************/
void Test_Lcd_Tft_16Bpp_240_320(void)
{
//unsigned int x,y ;
//U32 c;

#define DELAY_TIME 36000

#ifdef DEBUG
Uart_Printf("\nTest LTS350Q1_PE1 & LQ035Q7DB02 (TFT LCD)!\n");
#endif

Lcd_Port_Init();
Lcd_Init();
Lcd_EnvidOnOff(1); //turn on vedio

Lcd_ClearScr(28); //fill all screen with some color

/* Glib_FilledRectangle( 12, 12, 228, 308,0x0000); //fill a Rectangle with some color

Glib_FilledRectangle( 24, 24, 88,296,0x001f); //fill a Rectangle with some color
Glib_FilledRectangle( 89, 24,152,296,0x07e0); //fill a Rectangle with some color
Glib_FilledRectangle(153, 24,216,296,0xf800); //fill a Rectangle with some color

Glib_FilledRectangle( 70, 110, 170, 210,0xf7e0); //fill a Rectangle with some color
Glib_FilledRectangle( 90, 130, 150, 190,0x07ff); //fill a Rectangle with some color
Glib_FilledRectangle(110, 150, 130, 170,0xf81f); //fill a Rectangle with some color*/

#ifdef DEBUG
Uart_Printf( "\nrGPBCON=0x%x\n", rGPBCON );
Uart_Printf( "\trGPBUP=0x%x\n", rGPBUP );
Uart_Printf( "rGPCCON=0x%x\n", rGPCCON );
Uart_Printf( "\trGPCUP=0x%x\n", rGPCUP );
Uart_Printf( "rGPDCON=0x%x\n", rGPDCON );
Uart_Printf( "\trGPDUP=0x%x\n", rGPDUP );
Uart_Printf( "rGPGCON=0x%x\n", rGPGCON );
Uart_Printf( "\trGPGUP=0x%x\n\n", rGPGUP );

Uart_Printf( "rLCDCON1=0x%x\n", rLCDCON1 );
Uart_Printf( "rLCDCON2=0x%x\n", rLCDCON2 );
Uart_Printf( "rLCDCON3=0x%x\n", rLCDCON3 );
Uart_Printf( "rLCDCON4=0x%x\n", rLCDCON4 );
Uart_Printf( "rLCDCON5=0x%x\n\n", rLCDCON5 );

Uart_Printf( "rLCDSADDR1=0x%x\n", rLCDSADDR1 );
Uart_Printf( "rLCDSADDR2=0x%x\n", rLCDSADDR2 );
Uart_Printf( "rLCDSADDR3=0x%x\n\n", rLCDSADDR3 );

Uart_Printf( "rLCDINTMSK=0x%x\n", rLCDINTMSK );
Uart_Printf( "rLPCSEL=0x%x\n", rLPCSEL );
Uart_Printf( "rTPAL=0x%x\n\n", rTPAL );
#endif

//Paint_Bmp( 0, 0, 240, 320, xyx_240_320 ); //paint a bmp
}
//*************************************************************
代码都贴在这了。大家帮我看看。谢谢。二楼的兄弟帮我看一下。

点赞 2009-9-28 15:45